97829478 has 16 divisors (see below), whose sum is σ = 217398960. Its totient is φ = 32609808.

The previous prime is 97829453. The next prime is 97829483. The reversal of 97829478 is 87492879.

97829478 is a `hidden beast` number, since 97 + 82 + 9 + 478 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1811657 = 97829478 / (9 + 7 + 8 + 2 + 9 + 4 + 7 + 8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 905775 + ... + 905882.

It is an arithmetic number, because the mean of its divisors is an integer number (13587435).

Almost surely, 2^97829478 is an apocalyptic number.

97829478 is an abundant number, since it is smaller than the sum of its proper divisors (119569482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97829478 is a wasteful number, since it uses less digits than its factorization.

97829478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811668 (or 1811662 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 97829478 is about 9890.8785251867. The cubic root of 97829478 is about 460.7760655157.

The spelling of 97829478 in words is "ninety-seven million, eight hundred twenty-nine thousand, four hundred seventy-eight".